Mitsubishi 380. Manual — part 725
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54C-311
STEP 8. Check the CAN bus lines between the ABS-ECU,
A/T-ECU and the ENGINE-ECU (communication line
including the ENGINE-ECU). Measure the resistance at
ABS-ECU connector A-02.
NOTE: when diagnosing CAN-BUS on vehicles with
manual transmission (M/T), disregard A/T-ECU and it’s wir-
ing circuits and check between ABS-ECU and
ENGINE-ECU only.
• Refer to circuit diagrams GROUP-
• Refer to configuration diagrams GROUP-
CAUTION
A digital multimeter should be used. For details refer to
CAUTION
The test wiring harness should be used. For details refer to
(1) Disconnect ABS-ECU connector A-02, and measure the
resistance at the wiring harness side of ABS-ECU
connector A-02.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
position
CAUTION
Disconnect the negative battery terminal. For details refer
to
.
(3) Disconnect the negative battery terminal.
(4) Measure the resistance between ABS-ECU connector
terminals 15 and 26.
OK: 120
± 20 Ω
Q: Does the resistance measure 120
± 20 Ω?
YES : If the resistance measures 120
± 20 Ω, diagnose CAN
bus lines thoroughly by referring to
<Vehicles with multi-center display >.
NO : If the resistance does not measure 120
± 20 Ω, go to
Step 9 .
16DB402A
A-02 (GR)
CONNECTOR: A-02
A-02 HARNESS CONNECTOR:
16DB506A
TEST
HARNESS
TEST
HARNESS
HARNESS SIDE: A-02
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54C-312
STEP 9. Check the CAN bus lines (communication line
only) between ABS-ECU and the A/T-ECU. Measure the
resistance between ABS-ECU connector A-02 and A/T-ECU
connector B-19.
NOTE: when diagnosing CAN-BUS on vehicles with
manual transmission (M/T), disregard A/T-ECU and it’s wir-
ing circuits and check between ABS-ECU and
ENGINE-ECU only.
CAUTION
A digital multimeter should be used. For details refer to
CAUTION
The test wiring harness should be used. For details refer to
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54C-313
(1) Disconnect ABS-ECU connector A-02 and A/T-ECU
connector B-19, and measure the resistance between each
wiring harness side connector.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
CAUTION
Disconnect the negative battery terminal. For details refer
to
.
(3) Disconnect the negative battery terminal.
16DB480A
COVER
ENGINE
CONTROL
UNIT
AIR
CLEANER
A/T
CONTROL
UNIT
16DB402A
A-02 (GR)
CONNECTOR: A-02
A-02 HARNESS CONNECTOR:
DIAGNOSIS
CONTROLLER AREA NETWORK (CAN)
54C-314
(4) Measure the resistance between ABS-ECU connector
terminal 15 and A/T-ECU B-19 connector terminal 14.
OK: 2 ohms or less
(5) Measure the resistance between ABS-ECU connector
terminal 26 and A/T-ECU B-19 connector terminal 13.
OK: 2 ohms or less
NOTE: when diagnosing CAN-BUS on vehicles with
manual transmission (M/T), disregard A/T-ECU and it’s wir-
ing circuits and check between ABS-ECU and
ENGINE-ECU only.
CAUTION
Strictly observe the specified wiring harness repair proce-
dure. For details refer to
Q: Do all the resistances measure 2 ohms or less?
YES : If all the resistances measure 2 ohms or less, go to
Step 10.
NO : If either of the resistances measures more than 2
ohms or all the resistances measure more than 2
ohms, repair the wiring harness between ABS-ECU
connector and the A/T-ECU connector B-19.
16DB507A
HARNESS SIDE: A-02
HARNESS SIDE: B-19
TEST
HARNESS
TEST
HARNESS
16DB508A
HARNESS SIDE: A-02
HARNESS SIDE: B-19
TEST
HARNESS
TEST
HARNESS
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст